Water Leak Suspected at Crippled Nuclear Plant

By

Mari Iwata

Updated April 6, 2013 9:17 a.m. ET

TOKYO—Japan's nuclear regulator said it was moving tons of contaminated water after detecting signs of leakage from one of seven underground pools at the tsunami-crippled Fukushima Daiichi nuclear-power plant.

The country's Nuclear Regulation Authority said Saturday that up to 120 metric tons of contaminated water may have leaked into nearby soil surrounding the plant but that the leak is unlikely to have reached the sea, half a...